RE: 7730/ANHT code problem

["Gorden Jennings" <gjennings@ixpres.com>]

The voltage from pin 56 of the memcal selects the cyl number; this in turn
is connected pin 13 of a 16-pin resistor network, which is under the knock
sensor filter network.

Voltage Conversion table:

0 to 1 volt 8 cylinder port, injection
1 to 2.5 volts 6 cylinder, port injection
2.5 to 4 volts 4 cylinder, port injection
4 to 5 volts any cylinder count, throttle body injection.

This came from Ludis Langens which was forwarded to me by Shannon.


Regards
Gorden


-----Original Message-----
From: owner-gmecm@diy-efi.org [mailto:owner-gmecm@diy-efi.org]On Behalf Of
chetwagner@uswest.net
Sent: Thursday, August 17, 2000 7:26 PM
To: gmecm@diy-efi.org
Subject: 7730/ANHT code problem

Just for starters, I am in the middle of a conversion that will be
using the 7730 and hopefully the ANHT/AUJP code.  That is if I can
figure out why the cyl select function in the code does not work.
No mater what the setting is set to, the engine doesn't run very well
and the scantool always shows the rpm as if the engine is a
V8(this is a four cyl engine it is going on).  I do not know how to
read any of the code that is on the chip besides the data tables,
but maybe someone who does would be able to help me.  It almost
seems like the code was made specifically for the V8 and nothing
else.  Please help, any little bit is more than I have.
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